To create a new event, visit the "Schedule" tab

Click "Create Event"

In the Create an Event window, click to search for an existing project

Select the Project you would like to link your event to

Enter your event details and click "Create event"

Click on the calendar icon to access the schedule

Click on the Plus icon to add a new event

Add the details for your event. Scroll to the bottom and select "Link to a Project". Find your project and click save